There are just some who don't want to change what they're comfortable with, so you'll need to do it alone. I'm the only low carber in my house, and yes, it's hard at times, but I am commited to doing this for me.

I don't know what I'd do if my dh or one of the kids brought me donuts, but it wouldn't be pleasant. If they don't want to do it, fine, they don't really need to lose, but they do support me and they accept that I don't buy any junk any more.
You can do this! Maybe if he sees how wonderfully you're doing and feeling, it will inspire him. Good luck to you.